condition mean min max ZT0-3 85.172221 85.172221 85.172221 ZT4-7 76.9486615 76.9486615 76.9486615 ZT8-11 97.05112650000001 97.05112650000001 97.05112650000001 ZT12-15 93.66964 93.66964 93.66964 ZT16-19 106.304023 106.304023 106.304023 ZT20-23 96.05666299999999 96.05666299999999 96.05666299999999